Arithmetic and control unit



FIG. 1 is a perspective view of the top, front, and right side of anarithmetic and control unit showing my new design;

FIG. 2 is a perspective view of the bottom, rear, and left side thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The ornamental design for an arithmetic and control unit, as shown.